Etymology:
From the Latin pinnatus, pinnate, with the compound prefix
multi-, many, referring to the complexly branched leaflets.

Literature:
Wang 1996

Illustrations:
Wang 1996.

Historical notes:
Although known for several decades, this remarkable species was only
recognised as distinct in 1993 by Chinese botanist
C.J. Chen.

Distinguishing features:
The bipinnate leaves immediately distinguish this species and the closely
related C. debaoensis within the genus. C. multipinnata is
distinguished from the latter by the longer leaves with broader, thinner
leaflets that are broadest above the mid-point, and the smaller
megasporophylls with shorter teeth on the apical lamina. The subterranean
habit, the small, soft microsporangiate cones, the loose, freely peeling
sarcotesta lacking a fibrous layer and the verrucose sclerotesta are
features shared by a wider group of related species (Section
Stangerioides).

Distribution and habitat:
Known from a limited area in the Red River gorge in eastern Yunnan, with a
disjunct occurrence in Yen Bai Province, northern Vietnam. In both
occurrences it is found growing in closed evergreen forest on limestone
on very steep slopes. Much of the forest habitat has been cleared or
severely degraded. Putative hybrids with C. bifida are known.

Conservation status:
This species is under heavy pressure from horticultural collectors and
from habitat loss, and is already severely depleted in the Chinese
occurrences especially. It is regarded as endangered.
IUCN (1994) Red List status DD, possibly EN.